Foldable electronic device and control method therefor

Abstract

A foldable electronic device and a control method therefor. The foldable electronic device comprises a foldable housing (100), a first display screen (200), a heating unit (300) and a control unit (400), wherein the foldable housing (100) comprises a first housing (110), a second housing (120), and a rotating shaft mechanism (130) arranged at the joint of the first housing (110) and the second housing (120); the first display screen (200) has a first screen area (201), a second screen area (202) and a bending area (203), the first screen area (201) being arranged on the first housing (110), the second screen area (202) being arranged on the second housing (120), and the bending area (203) being arranged on the rotating shaft mechanism (130); the heating unit (300) is used for heating at least the bending area (203) of the first display screen (200); and the control unit (400) is used for acquiring a first temperature value of the bending area (203) and, when the first temperature value is less than a temperature threshold, controlling the heating unit (300) to heat at least the bending area (203). The foldable electronic device and the control method, which are applicable to foldable mobile phones and foldable tablets, can solve the problem of display screens in foldable electronic devices being prone to damage in the related art.

Description

Foldable electronic device and control method thereof

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on March 29, 2024, with application number 202410392382.0 and application name “Foldable electronic device and its control method”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of foldable electronic devices, and in particular to a foldable electronic device and a control method thereof. Background Art

[0003] The main feature of foldable electronic devices such as foldable mobile phones and foldable tablets is that they can be folded. They can provide a larger display area when unfolded and remain portable when folded. Therefore, they are becoming more and more popular among users.

[0004] The display is a key component of foldable electronic devices. This display utilizes flexible screen technology, allowing it to bend for easy folding. Bendability is a key performance characteristic of displays, and its flexibility is closely related to temperature. At room temperature, the display material is very flexible and can be bent multiple times without damage. However, at low temperatures, the display material becomes more rigid, reducing its flexibility. Folding and unfolding the display at these temperatures can damage it. Therefore, ensuring the safe use of foldable electronic devices in low-temperature environments has become a key issue within the industry.

[0005] A foldable electronic device in the related art usually includes a warning "Do not fold in low temperatures" in its product packaging or user manual. However, users rarely pay attention to this warning and are prone to folding or unfolding the device in low temperature environments, which may damage the display screen. Summary of the Invention

[0006] The embodiments of the present application provide a foldable electronic device and a control method thereof, which are used to solve the problem in the related art that the display screen of the foldable electronic device is easily damaged.

[0007] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0008] In a first aspect, an embodiment of the present application provides a foldable electronic device, comprising a foldable shell, a first display screen, a heating unit, and a control unit; the foldable shell comprises a first shell, a second shell, and a hinge mechanism arranged at the joint position of the first shell and the second shell, and the first shell and the second shell can switch between an unfolded state and a folded state; the first display screen has a first screen area, a second screen area, and a bending area, the first screen area is arranged on the first shell, the second screen area is arranged on the second shell, and the bending area is arranged on the hinge mechanism; the heating unit is at least used to heat the bending area of ​​the first display screen, and the control unit is used to: obtain a first temperature value of the bending area; when the first temperature value is less than a temperature threshold, control the heating unit to heat at least the bending area.

[0009] The foldable electronic device in the embodiment of the present application is provided with a heating unit. Therefore, when the foldable electronic device is in a low-temperature environment, if the first temperature value of the bending zone is less than the temperature threshold, the control unit can control the heating unit to heat the bending zone of the first display screen, so as to increase the temperature of the bending zone and improve the bending performance of the bending zone of the first display screen, thereby reducing damage to the first display screen when the user performs folding and unfolding operations.

[0010] In some embodiments of the first aspect, along the thickness direction of the first display screen, the first display screen includes a support layer, a flexible panel disposed on the support layer, and a touch layer disposed on the flexible panel, and the heating unit is disposed between the touch layer and the support layer. This configuration can make the structure between the foldable housing and the first display screen more compact, thereby reducing the number of components in the foldable electronic device.

[0011] In some embodiments of the first aspect, the heating unit comprises at least a flexible panel; and the control unit is configured to control the brightness of the flexible panel to increase to a first brightness value when the first temperature value is less than a temperature threshold. This configuration eliminates the need for an additional heating unit, thereby reducing the cost of the foldable electronic device.

[0012] In some embodiments of the first aspect, the first brightness value is the maximum brightness value of the flexible panel. This setting can enable the flexible panel to generate more heat to improve the heating effect on the bending area.

[0013] In some embodiments of the first aspect, the control unit is configured to, when the first temperature value is greater than or equal to a temperature threshold, control the brightness of the flexible panel to decrease to a second brightness value; wherein the second brightness value is less than the first brightness value. This configuration helps conserve power in the foldable electronic device.

[0014] In some embodiments of the first aspect, the heating unit includes a heating trace layer, which is disposed between the support layer and the flexible panel, with the heating trace layer at least partially located in the bend region. By configuring the heating unit as the heating trace layer, the heating unit can be simplified in structure and occupy less space. By disposing the heating trace layer between the support layer and the flexible panel, the effect of the heating trace layer on light emission from the flexible panel can be reduced.

[0015] In some embodiments of the first aspect, the heating unit includes multiple heating trace layers, and the multiple heating trace layers are stacked, which is conducive to improving the heating effect of the heating unit on the bending zone.

[0016] In some embodiments of the first aspect, the heating wiring layer includes a carrier layer and a heating wiring disposed on the carrier layer, wherein the heating wiring is a serpentine line, which is conducive to improving the heating effect of the heating wiring on the bending zone.

[0017] In some embodiments of the first aspect, the heating wiring is an ITO wiring. This arrangement not only makes the heating wiring easy to manufacture, but also reduces the impact on the display effect of the first display screen.

[0018] In some embodiments of the first aspect, the heating unit includes a bendable heating plate, which is disposed between the first display screen and the foldable housing; the heating plate has a first heating plate area, a second heating plate area, and a third heating plate area, the first heating plate area being disposed on the first housing, the second heating plate area being disposed on the second housing, and the third heating plate area being disposed on the hinge mechanism. In this configuration, the bendable heating plate is configured to increase the heat transfer area between the heating plate and the bending area of ​​the first display screen, thereby facilitating an improvement in the heating effect of the heating plate on the bending area; at the same time, the heating plate can direct heat from the higher temperature of the first housing or the second housing to the other, thereby facilitating heat dissipation of electronic components within the first and second housings.

[0019] In some embodiments of the first aspect, the heater plate includes a first heat-conducting layer and a second heat-conducting layer stacked along the thickness direction of the heater plate, wherein the first heat-conducting layer is a metal layer or an alloy layer, and the second heat-conducting layer is a graphite layer. This arrangement can increase the heat diffusion path, facilitating uniform heat distribution across the heater plate; it can also increase the overall specific heat capacity of the heater plate, reducing heat loss from the heater plate, thereby enabling the heater plate to continuously heat the bending zone in low-temperature environments.

[0020] In some embodiments of the first aspect, the first heat-conducting layer is disposed on a side of the second heat-conducting layer close to the first display screen. This arrangement can improve the heating effect of the heating plate on the bending area.

[0021] In some embodiments of the first aspect, the thickness of the first heat-conducting layer is smaller than the thickness of the second heat-conducting layer. This configuration is beneficial for improving the bendability of the heating plate.

[0022] In some embodiments of the first aspect, a hollow portion is provided on the first heat-conducting layer, and the hollow portion is at least partially located in the third heating plate area and penetrates the first heat-conducting layer. Such a configuration is conducive to further improving the bendability of the heating plate.

[0023] In some embodiments of the first aspect, the hollow portion is a slit extending along the arrangement direction of the first heating plate area, the second heating plate area, and the third heating plate area. This arrangement reduces the effect of the hollow portion on heat conduction on the heating plate.

[0024] In some embodiments of the first aspect, the first heating plate area is fixedly connected to the first housing, and the second heating plate area is freely disposed between the second screen area and the second housing. This arrangement prevents the heating plate from being pulled and damaged during the unfolding and folding of the foldable housing.

[0025] In some embodiments of the first aspect, the first housing includes a first middle frame and a first back cover, the first screen area is disposed on one side of the first middle frame, the first back cover is disposed on the other side of the first middle frame, the first heating plate area is disposed between the first screen area and the first middle frame, the first back cover and the first middle frame enclose a first accommodating space, a power supply unit is disposed within the first accommodating space, and the power supply unit is electrically connected to the first heating plate area via a flexible printed circuit board. This arrangement prevents relative movement of the flexible printed circuit board with respect to the power supply unit, thereby ensuring stable transmission of electrical signals within the flexible printed circuit board.

[0026] In some embodiments of the first aspect, the control unit is configured to: control the foldable electronic device to issue a first prompt message when the first temperature value is less than a temperature threshold; and control the foldable electronic device to issue a second prompt message when the first temperature value is greater than or equal to the temperature threshold. This configuration can provide timely prompts to the user, reducing the user's folding or unfolding operations on the foldable electronic device in low-temperature environments, thereby further reducing damage to the first display screen.

[0027] In some embodiments of the first aspect, the control unit is configured to control the first display screen to emit the first prompt information and the second prompt information. Thus, the first prompt information and the second prompt information are easily recognized by the user and are not easily confused with other prompt information of the foldable electronic device.

[0028] In some embodiments of the first aspect, the foldable electronic device further includes a second display screen; the first housing includes a first middle frame, the first screen area is disposed on one side of the first middle frame, and the second display screen is disposed on the other side of the first middle frame; the second housing includes a second middle frame and a second back cover, the second screen area is disposed on one side of the second middle frame, and the second back cover is disposed on the other side of the second middle frame; and the control unit is configured to: when the first display screen is in an unfolded state, control the first display screen to emit a first prompt message and a second prompt message; when the first display screen is in a folded state, control the second display screen to emit a first prompt message and a second prompt message. With such a configuration, regardless of whether the foldable electronic device is in an unfolded state or a folded state, it is ensured that the user receives the first prompt message and the second prompt message in a timely manner, thereby preventing the user from performing unfolding or folding operations when the first temperature value of the bending zone is lower than a temperature threshold.

[0029] In some embodiments of the first aspect, the first prompt information includes: a first interface text message for prompting not to fold or unfold the electronic device, and / or a first interface color message for prompting not to fold or unfold the electronic device. The second prompt information includes: a second interface text message for prompting that the electronic device can be folded or unfolded, and / or a second interface color message for prompting that the electronic device can be folded or unfolded. This configuration can further improve the recognition of the first and second prompt information, preventing users from being confused by other prompt information on the foldable electronic device.

[0030] In some embodiments of the first aspect, a first circuit board is disposed within the first housing, the first circuit board including a carrier substrate, and the control unit is located on the carrier substrate. The carrier substrate is also provided with multiple temperature sensors, and the control unit is configured to obtain a first temperature value based on temperature values ​​detected by the multiple temperature sensors. This configuration allows temperature values ​​to be obtained at multiple locations, thereby enabling the control unit to obtain a more accurate first temperature value.

[0031] In a second aspect, an embodiment of the present application provides a control method for a foldable electronic device, wherein the foldable electronic device includes a foldable shell, a first display screen and a heating unit; the first display screen is arranged on the foldable shell, and the foldable shell is used to unfold and fold the first display screen, and the foldable shell includes a first shell, a second shell, and a hinge mechanism arranged at the joint position of the first shell and the second shell; the first display screen has a first screen area, a second screen area and a bending area, the first screen area is arranged on the first shell, the second screen area is arranged on the second shell, and the bending area is arranged on the hinge mechanism; the heating unit is at least used to heat the bending area of ​​the first display screen; the control method of the foldable electronic device includes: obtaining a first temperature value of the bending area, and when the first temperature value is less than a temperature threshold, controlling the heating unit to heat at least the bending area.

[0032] The beneficial effects of the control method of the foldable electronic device in the embodiment of the present application are the same as the beneficial effects of the foldable electronic device in the first aspect, and will not be repeated here.

[0033] In some embodiments of the second aspect, along a thickness direction of the first display screen, the first display screen includes a flexible panel and a touch layer disposed on the flexible panel; the heating unit is formed of at least the flexible panel; and controlling the heating unit to heat at least the bending zone includes controlling the brightness of the flexible panel to increase to a first brightness value. This configuration eliminates the need for an additional heating unit, thereby reducing the cost of the foldable electronic device.

[0034] In some embodiments of the second aspect, the first brightness value is the maximum brightness value of the flexible panel. This setting can enable the flexible panel to generate more heat to improve the heating effect on the bending area.

[0035] In some embodiments of the second aspect, when the first temperature value is greater than or equal to a temperature threshold, the brightness of the flexible panel is controlled to decrease to a second brightness value, wherein the second brightness value is less than the first brightness value. This configuration helps conserve power in the foldable electronic device.

[0036] In some embodiments of the second aspect, when the first temperature value is less than a temperature threshold, the foldable electronic device is controlled to issue a first prompt; and when the first temperature value is greater than or equal to the temperature threshold, the foldable electronic device is controlled to issue a second prompt. This arrangement can provide timely prompts to the user, reducing the user's folding or unfolding operations on the foldable electronic device in low-temperature environments, thereby further reducing damage to the first display screen.

[0037] In some embodiments of the second aspect, when the first temperature value is less than a temperature threshold, the first display screen is controlled to display a first prompt message; and when the first temperature value is greater than or equal to the temperature threshold, the first display screen is controlled to display a second prompt message. This arrangement makes the first prompt message and the second prompt message easily recognizable by the user and less likely to be confused with other prompt messages on the foldable electronic device.

[0038] In some embodiments of the second aspect, the foldable electronic device further includes a second display screen; the first housing includes a first middle frame, the first screen area is arranged on one side of the first middle frame, and the second display screen is arranged on the other side of the first middle frame; the second housing includes a second middle frame and a second back cover, the second screen area is arranged on one side of the second middle frame, and the second back cover is arranged on the other side of the second middle frame; the first display screen is located on the inner side of the foldable housing when in a folded state; when the first display screen is in an unfolded state, the first display screen is controlled to send a first prompt message and a second prompt message; when the first display screen is in a folded state, the second display screen is controlled to send a first prompt message and a second prompt message. With such a configuration, regardless of whether the foldable electronic device is in an unfolded state or a folded state, it can be ensured that the user receives the first prompt message and the second prompt message in a timely manner, thereby preventing the user from performing unfolding or folding operations when the first temperature value of the bending zone is lower than the temperature threshold.

[0039] In a third aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a control unit, implements the control method of the foldable electronic device in the second aspect.

[0040] The beneficial effects of the computer-readable storage medium in the embodiment of the present application are the same as the beneficial effects of the control method of the foldable electronic device in the second aspect, and will not be repeated here.

[0041] In a fourth aspect, an embodiment of the present application provides a computer program product. When the computer program product is run on a foldable electronic device, the foldable electronic device executes the control method of the foldable electronic device as in the second aspect.

[0042] The beneficial effects of the computer program product in the embodiment of the present application are the same as the beneficial effects of the control method of the foldable electronic device in the second aspect, and will not be repeated here.

[0043] In a fifth aspect, an embodiment of the present application provides a chip system, which includes a control unit, the control unit includes a processor and a memory, and the processor executes a computer program stored in the memory to implement a control method for a foldable electronic device as in the second aspect.

[0044] The beneficial effects of the chip system in the embodiment of the present application are the same as the beneficial effects of the control method of the foldable electronic device in the second aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] FIG1 is a schematic structural diagram of a foldable electronic device (mobile phone) in a first embodiment of the present application;

[0046] FIG2 is a cross-sectional view taken along line AA of the foldable electronic device in FIG1 ;

[0047] FIG3 is a simplified structural diagram of the foldable electronic device in the first embodiment of the present application in an unfolded state;

[0048] FIG4 is a simplified structural diagram of the foldable electronic device in the folded state according to the first embodiment of the present application;

[0049] FIG5 a is a schematic diagram showing the arrangement of components on the first circuit board in FIG3 ;

[0050] FIG5 b is a schematic diagram showing the connection relationship of components on the first circuit board in FIG3 ;

[0051] FIG6 a is an exploded view of the foldable electronic device in FIG1 at a certain viewing angle;

[0052] FIG6 b is an exploded view of the foldable electronic device in FIG1 from another perspective;

[0053] FIG7 is a schematic structural diagram of the foldable electronic device in FIG1 with the first display screen removed;

[0054] FIG8 is a partial enlarged view of the foldable electronic device at point A in FIG2 ;

[0055] FIG9 is a schematic structural diagram of the heating plate shown in FIG7 ;

[0056] FIG10 is an exploded view of the heating plate shown in FIG9 ;

[0057] FIG11 is a BB cross-sectional view of the heating plate shown in FIG9 ;

[0058] FIG12 is a front view of a foldable electronic device (mobile phone) in a second embodiment of the present application;

[0059] FIG13 is a CC cross-sectional view of the foldable electronic device in FIG12 ;

[0060] FIG14 is a schematic diagram of the arrangement of heating lines in a heating unit in some embodiments of the present application;

[0061] FIG15 is a schematic diagram of the arrangement of heating lines in a heating unit in some other embodiments of the present application;

[0062] FIG16 is a schematic structural diagram of a first display screen of a foldable electronic device (mobile phone) in a third embodiment of the present application;

[0063] FIG17 is a schematic diagram of adjusting the working state of the heating unit shown in FIG16;

[0064] FIG18 is a schematic diagram of a foldable electronic device sending a prompt message in some embodiments of the present application;

[0065] FIG19 is a flow chart of a control method for a foldable electronic device in some embodiments of the present application;

[0066] FIG20 is a schematic structural diagram of a foldable electronic device in a fourth embodiment of the present application in an unfolded state;

[0067] FIG21 is a schematic structural diagram of the foldable electronic device shown in FIG20 in a folded state;

[0068] FIG22 is a flow chart of a control method for a foldable electronic device in some other embodiments of the present application. DETAILED DESCRIPTION

[0069] The technical solutions in some embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0070] With the development of electronic technology, electronic devices such as smartphones and tablets have gradually become essential tools for communication, entertainment, and learning. To achieve better visual effects, the display screens of electronic devices are becoming larger and larger. However, as the display screens of electronic devices continue to grow in size, they become very inconvenient to carry. Therefore, foldable electronic devices such as foldable phones and foldable tablets have emerged. Their main feature is that they can be folded. Foldable electronic devices can provide a larger display area when unfolded, while maintaining portability when folded. Therefore, they are becoming increasingly popular among users.

[0071] The display screen is one of the main components of foldable electronic devices. The display screen uses flexible screen technology, which allows it to bend for easy folding. Among them, bendability is one of the important indicators of the display screen. The bendability of the display screen is related to temperature. The material of the display screen has good flexibility at room temperature and can be bent multiple times without damage. However, in a low temperature environment (such as -20°C), the material of the display screen will become more rigid. For example, the adhesive layer between the layers of the display screen will increase its modulus and decrease its elasticity in a low temperature environment, making the adhesive layer harder, thereby reducing the bendability of the display screen. At this time, if the display screen is folded or unfolded, it will cause damage to the display screen. Therefore, how to ensure the safe use of foldable electronic devices in low temperature environments has become one of the important topics in the industry.

[0072] In order to ensure the safe use of foldable electronic devices in low-temperature environments, a foldable electronic device in the related art usually includes a warning "Do not fold in low temperatures" in its product packaging or user manual. However, users rarely pay attention to this warning and are prone to folding or unfolding the device in low-temperature environments, which may cause damage to the display screen.

[0073] To this end, an embodiment of the present application provides a foldable electronic device and a control method thereof. A heating unit that can heat the display screen is set in the foldable electronic device. The heating unit can heat the display screen at low temperatures to ensure the bendability of the display screen, thereby reducing damage to the display screen caused by folding or unfolding operations in a low temperature environment.

[0074] The foldable electronic device in the embodiments of the present application can be a mobile phone, tablet computer, wearable device, or other electronic device. The following uses a mobile phone as an example to illustrate the specific structure of the foldable electronic device. Other types of foldable electronic devices can be specifically configured with reference to the structure of the mobile phone embodiment, and will not be described in detail here.

[0075] Figure 1 is a schematic structural diagram of the foldable electronic device (mobile phone) in the first embodiment of the present application, Figure 2 is an AA cross-sectional view of the foldable electronic device in Figure 1, and the back cover of the foldable electronic device is not shown in the cross-sectional view, Figure 3 is a schematic structural diagram of the foldable electronic device in the first embodiment of the present application in the unfolded state, and Figure 4 is a schematic structural diagram of the foldable electronic device in the first embodiment of the present application in the folded state.

[0076] As shown in FIG. 1 to FIG. 4 , the foldable electronic device includes a foldable housing 100 , a first display screen 200 , a heating unit 300 , and a control unit 400 .

[0077] The first display screen 200 is mounted on the foldable housing 100, which is used to unfold and fold the first display screen 200. The foldable housing 100 includes a first housing 110, a second housing 120, and a hinge mechanism 130 located at the junction of the first and second housings 110, 120. The first display screen 200 is inherently flexible and can bend and deform under external force. The first display screen 200 includes a first screen area 201, a second screen area 202, and a bending area 203. The first screen area 201 is mounted on the first housing 110, the second screen area 202 is mounted on the second housing 120, and the bending area 203 is mounted on the hinge mechanism 130.

[0078] As shown in Figures 3 and 4, the first shell 110 includes a first middle frame 111 and a first back cover 114. The first screen area 201 is arranged on one side of the first middle frame 111, and the first back cover 114 is arranged on the other side of the first middle frame 111. The first back cover 114 and the first middle frame 111 form a first accommodating space 115. Specifically, the first middle frame 111 includes a first middle frame bottom wall 112 and a first middle frame side wall 113 arranged at the edge of the first middle frame bottom wall 112. The first back cover 114, the first middle frame bottom wall 112 and the first middle frame side wall 113 form the first accommodating space 115.

[0079] The second shell 120 includes a second middle frame 121 and a second back cover 124. The second screen area 202 is arranged on one side of the second middle frame 121, and the second back cover 124 is arranged on the other side of the second middle frame 121. The second back cover 124 and the second middle frame 121 form a second accommodating space 125. Specifically, the second middle frame 121 includes a second middle frame bottom wall 122 and a second middle frame side wall 123 arranged at the edge of the second middle frame bottom wall 122. The second back cover 124, the second middle frame bottom wall 122 and the second middle frame side wall 123 form a second accommodating space 125. The first accommodating space 115 and the second accommodating space 125 are used to arrange circuit boards, batteries and other components.

[0080] The first shell 110 and the second shell 120 can switch between a folded state (as shown in FIG4 ) and an unfolded state (as shown in FIG3 ). As shown in FIG1 and FIG3 , when the first shell 110 and the second shell 120 are in the unfolded state, the first display screen 200 is in the unfolded state, and the display area of ​​the first display screen 200 is exposed to display image information to the user; as shown in FIG4 , when the first shell 110 and the second shell 120 are in the folded state, the first shell 110 and the second shell 120 are stacked, and the first display screen 200 is in the folded state. The first display screen 200 is folded between the first shell 110 and the second shell 120, that is, the first display screen 200 is located inside the foldable shell 100, which makes it easier to carry the foldable electronic device.

[0081] The stacking of the first shell 110 and the second shell 120 specifically means that the thickness directions of the first middle frame bottom wall 112 and the second middle frame bottom wall 122 are parallel or approximately parallel (for example, the deviation is within 10°).

[0082] As shown in Figures 2 and 3, the first shell 110 and the second shell 120 are provided with a first shielding wall 116 and a second shielding wall 126 at the junction. The first shielding wall 116 is connected to the end of the first middle frame side wall 113 away from the first display screen 200 (the lower end of the first middle frame side wall 113 shown in Figure 3), and the second shielding wall 126 is connected to the end of the second middle frame side wall 123 away from the first display screen 200 (the lower end of the second middle frame side wall 123 shown in Figure 3). As shown in Figures 2 and 3, when the first shell 110 and the second shell 120 are in the unfolded state, the hinge mechanism 130 is located between the first middle frame 111 and the second middle frame 121. At this time, the hinge mechanism 130 is blocked by the first shielding wall 116 and the second shielding wall 126. The hinge mechanism 130 cannot be seen from the back side of the foldable electronic device, thereby ensuring the appearance of the junction of the first shell 110 and the second shell 120 when the foldable electronic device is in the unfolded state.

[0083] As shown in Figures 3 and 4, when the first shell 110 and the second shell 120 move from the unfolded state to the folded state, the first shielding wall 116 and the second shielding wall 126 gradually open, and the hinge mechanism 130 gradually emerges from between the first middle frame 111 and the second middle frame 121; as shown in Figure 4, when the first shell 110 and the second shell 120 are in the folded state, the shaft cover of the hinge mechanism 130 (the appearance part located on the outside) is located in the gap formed by the first shielding wall 116 and the second shielding wall 126, and covers the gap to avoid seeing the moving parts of the hinge mechanism 130 in the gap from the outside, thereby ensuring the appearance of the junction of the first shell 110 and the second shell 120 when the foldable electronic device is in the folded state.

[0084] Of course, the structures of the first shell 110 and the second shell 120 are not limited to the above-mentioned structures, and other structures may be adopted according to actual conditions.

[0085] As shown in Figures 2 and 3, the heating unit 300 is used to heat at least the bending zone 203 of the first display screen 200. The control unit 400 is used to obtain a first temperature value of the bending zone 203 and control the heating unit 300 to heat at least the bending zone 203 when the first temperature value is less than a temperature threshold.

[0086] The foldable electronic device in the embodiment of the present application is provided with a heating unit 300. Therefore, when the foldable electronic device is in a low-temperature environment, if the first temperature value of the bending zone 203 is less than the temperature threshold, the control unit 400 can control the heating unit 300 to heat the bending zone 203 of the first display screen 200, so as to increase the temperature of the bending zone 203 and improve the bending performance of the bending zone 203 of the first display screen 200, thereby reducing damage to the first display screen 200 when the user performs folding and unfolding operations.

[0087] In some embodiments, the control unit 400 is configured to control the heating unit 300 to stop heating the bending zone 203 when the first temperature value is greater than or equal to a temperature threshold.

[0088] Among them, controlling the heating unit 300 to stop heating the bending zone 203 can be controlling the heating unit 300 to stop working, or controlling the heating unit 300 to enter a low-power state. The heat generated by the heating unit 300 when in the low-power state is less than or equal to the heat dissipated by the first display screen 200, that is, the heat generated by the heating unit 300 when in the low-power state is not enough to increase the temperature of the bending zone 203.

[0089] For example, assuming the temperature threshold is -21°C, when the first temperature value of the bending zone 203 is -30°C, the first temperature value is less than the temperature threshold, and the control unit 400 controls the heating unit 300 to heat at least the bending zone 203. When the first temperature value of the bending zone 203 is -18°C, the first temperature value is greater than the temperature threshold, and the control unit 400 controls the heating unit 300 to stop heating the bending zone 203.

[0090] The control unit 400 may be disposed in any position. In some embodiments, the control unit 400 is disposed within the first housing 110, as specifically shown in Figures 3 and 5a. Figure 5a is a schematic diagram illustrating the arrangement of components on the first circuit board 500 in Figure 3. The first circuit board 500 is disposed in the first accommodation space 115. The first circuit board 500 includes a carrier substrate 510, and the control unit 400 is disposed on the carrier substrate 510. As shown in Figures 3, 4, and 5a, the control unit 400 may be a SOC (System on Chip), but is not limited thereto. The control unit 400 may also be a CPU (Central Processing Unit), an MCU (Microcontroller Unit), an ASIC (Application Specific Integrated Circuit), or the like.

[0091] Of course, the control unit 400 is not limited to being set in the first shell 110. The control unit 400 can also be set in the second shell 120. Specifically, a second circuit board 900 is provided in the second accommodating space 125, and the control unit 400 is set on the supporting substrate of the second circuit board 900.

[0092] In some embodiments, as shown in Figures 5a and 5b, Figure 5b is a schematic diagram illustrating the connection relationship of components on the first circuit board 500 in Figure 3. A temperature sensor 600 may be provided within the foldable housing 100. The temperature sensor 600 may be connected to the control unit 400. The control unit 400 may be configured to obtain a first temperature value based on the temperature value detected by the temperature sensor 600.

[0093] The temperature sensor 600 may be a negative temperature coefficient (NTC) thermistor. However, the present invention is not limited thereto. Besides being a negative temperature coefficient (NTC) thermistor, the temperature sensor 600 may also be a positive temperature coefficient (PTC) thermistor, a thermocouple, or the like.

[0094] In some embodiments, the temperature sensor 600 can be arranged in the first shell 110. Specifically, as shown in Figures 3 and 5a, the temperature sensor 600 can be arranged on the supporting substrate 510 of the first circuit board 500. The temperature sensor 600 can detect the temperature value in the second accommodating space 125. The control unit 400 can indirectly obtain the first temperature value of the bending zone 203 based on the temperature value in the second accommodating space 125 and the relationship between the temperature value in the second accommodating space 125 and the first temperature value of the bending zone 203.

[0095] In some embodiments, there are multiple temperature sensors 600, and multiple temperature sensors 600 can be disposed on the carrier substrate 510. The control unit 400 obtains the first temperature value based on the temperature values ​​detected by the multiple temperature sensors 600. By providing multiple temperature sensors 600, temperature values ​​at multiple locations can be obtained, thereby enabling the control unit 400 to obtain a more accurate first temperature value based on the temperature values ​​at the multiple locations.

[0096] 3 and 5 a , multiple temperature sensors 600 are disposed on one edge of the carrier substrate 510 near the rotating shaft mechanism 130 . However, this is not limiting, and multiple temperature sensors 600 may also be disposed at other locations on the carrier substrate 510 .

[0097] As shown in FIG. 5 a , the number of the temperature sensors 600 may be four, but is not limited thereto. The number of the temperature sensors 600 may also be two, three, five, or the like.

[0098] Of course, the temperature sensor 600 is not limited to being set in the first shell 110. The temperature sensor 600 can also be set in other positions according to actual conditions. For example, the temperature sensor 600 can be set in a position that is in direct contact with the bending area 203. In this way, the control unit 400 can directly obtain the first temperature value based on the data detected by the temperature sensor 600.

[0099] In some embodiments, as shown in Figures 5a and 5b , a driving unit 700 is further provided on the carrier substrate 510. The driving unit 700 is connected to both the control unit 400 and the heating unit 300. The control unit 400 is configured to send a heating signal to the driving unit 700 when the first temperature value is less than a temperature threshold. The driving unit 700 is configured to drive the heating unit 300 to heat at least the bending region 203 upon receiving the heating signal.

[0100] As shown in FIG5 a , the driving unit 700 may be a driver IC, such as a power management chip.

[0101] The setting position of the heating unit 300 is not unique. The heating unit 300 can be set on the back side of the first display screen 200, or between the film layers inside the first display screen 200. Figures 2 to 8 show an embodiment in which the heating unit 300 is set on the back side of the first display screen 200, wherein Figure 6a is an exploded view of the foldable electronic device in Figure 1 at one viewing angle, Figure 6b is an exploded view of the foldable electronic device in Figure 1 at another viewing angle, Figure 7 is a structural schematic diagram of the foldable electronic device in Figure 1 after removing the first display screen 200, and Figure 8 is a local enlarged view of the foldable electronic device in Figure 2 at point A.

[0102] In this embodiment, as shown in Figures 6a, 6b and 7, the heating unit 300 may include a bendable heating plate 310, which is arranged between the first display screen 200 and the foldable shell 100; the heating plate 310 has a first heating plate area 311, a second heating plate area 312 and a third heating plate area 313, the first heating plate area 311 is arranged on the first shell 110, the second heating plate area 312 is arranged on the second shell 120, and the third heating plate area 313 is arranged on the hinge mechanism 130.

[0103] By setting the heating plate 310 to be bendable, as shown in Figures 3 and 4, the heating plate 310 can bend as the first display screen 200 is folded. When the first display screen 200 is in a folded state, the first heating plate area 311, the second heating plate area 312 and the third heating plate area 313 of the heating plate 310 can wrap the bending area 203, which is beneficial to increase the heat transfer area between the heating plate 310 and the bending area 203 of the first display screen 200, thereby helping to improve the heating effect of the heating plate 310 on the bending area 203. In addition, by setting the first heating plate area 311 on the first shell 110, the second heating plate area 312 on the second shell 120, and the third heating plate area 313 on the hinge mechanism 130, a heat conduction channel can be formed between the first shell 110 and the second shell 120. When the foldable electronic device is operating at room temperature, as shown in Figure 7, the heating plate 310 can conduct the heat of the higher temperature of the first shell 110 and the second shell 120 to the other, which is beneficial to the heat dissipation of the electronic components in the first shell 110 and the second shell 120.

[0104] The heating plate 310 and the first display screen 200 may be in direct contact or in indirect contact. For example, a heat-conducting material layer, such as a heat-conducting adhesive layer, is provided between the heating plate 310 and the first display screen 200 .

[0105] The structure of the heating plate 310 is not unique. In some embodiments, the heating plate 310 can be configured as a multi-layer structure, as shown in Figures 9, 10, and 11. Figure 9 is a schematic structural diagram of the heating plate 310 shown in Figure 7, Figure 10 is an exploded view of the heating plate 310 shown in Figure 9, and Figure 11 is a BB cross-sectional view of the heating plate 310 shown in Figure 9. Along the thickness direction Z of the heating plate 310, the heating plate 310 can also include a first heat-conducting layer 314 and a second heat-conducting layer 315 stacked together. The first heat-conducting layer 314 is a metal layer or an alloy layer, and the second heat-conducting layer 315 is a graphite layer.

[0106] The heater plate 310 is configured to comprise a first heat-conducting layer 314 and a second heat-conducting layer 315, which are stacked. This increases the heat diffusion path, allowing heat to diffuse along both the first heat-conducting layer 314 and the second heat-conducting layer 315. This facilitates heat diffusion throughout the heater plate 310, ensuring uniform heat distribution across the heater plate 310. Furthermore, the first heat-conducting layer 314 is configured as a metal layer or alloy layer, and the second heat-conducting layer 315 is configured as a graphite layer. This increases the overall specific heat capacity of the heater plate 310 (due to the high specific heat capacity of the graphite sheet, which, when combined with the metal sheet, increases the overall heat capacity of the heater plate 310). This reduces heat loss from the heater plate 310 after power is removed from the heater plate 310. Consequently, in low-temperature environments, the heater plate 310 can continuously heat the bending zone 203, ensuring that the temperature of the bending zone 203 remains above the temperature threshold.

[0107] As shown in FIG10 , the first heat-conducting layer 314 may be a steel sheet layer, but is not limited thereto. The first heat-conducting layer 314 may also be an aluminum alloy layer, a copper layer, or the like.

[0108] In some embodiments, as shown in Figures 8, 10, and 11, the first heat-conducting layer 314 is disposed on a side of the second heat-conducting layer 315 that is closer to the first display screen 200. Because the specific heat of the first heat-conducting layer 314 is smaller than that of the second heat-conducting layer 315, the first heat-conducting layer 314 heats up relatively quickly. By disposing the first heat-conducting layer 314 (metal layer or alloy layer) closer to the first display screen 200, the heating effect of the heating plate 310 on the bending region 203 can be improved.

[0109] In some embodiments, as shown in Figures 9, 10, and 11, the thickness of the first heat-conducting layer 314 is thinner than the thickness of the second heat-conducting layer 315. Since the hardness of the first heat-conducting layer 314 (metal layer or alloy layer) is generally greater than the hardness of the second heat-conducting layer 315 (graphite layer), setting the thickness of the first heat-conducting layer 314 to be thinner helps improve the bendability of the heating plate 310, thereby making the heating plate 310 easier to bend, and thus making the foldable electronic device easier to fold.

[0110] In some embodiments, as shown in Figures 9 and 10, a hollow portion 3141 is provided on the first heat-conducting layer 314. The hollow portion 3141 is at least partially located in the third heating plate region 313 and penetrates the first heat-conducting layer 314. By providing the hollow portion 3141 penetrating the first heat-conducting layer 314 in the third heating plate region 313, the hollow portion 3141 can reduce the strength of the first heat-conducting layer 314 in the third heating plate region 313, which helps further improve the bendability of the heating plate 310, thereby making the heating plate 310 easier to bend, and thus making the foldable electronic device easier to fold.

[0111] When the foldable electronic device is operating at room temperature, the higher temperature of the first shell 110 or the second shell 120 can be transferred to the other through the heating plate 310 to achieve heat dissipation. In order to make the heat transfer on the heating plate 310 smoother, in some embodiments, as shown in Figures 9 and 10, the hollow portion 3141 is a slit, and the slit extends along the arrangement direction Y of the first heating plate area 311, the second heating plate area 312, and the third heating plate area 313. That is, the extension direction of the slit is parallel to the above-mentioned arrangement direction Y. With this configuration, the extension direction of the hollow portion 3141 is consistent with the direction of heat conduction on the heating plate 310, reducing the impact of the hollow portion 3141 on the heat conduction on the heating plate 310, thereby ensuring smoother and more efficient heat conduction on the heating plate 310.

[0112] As shown in Figure 7, when the first shell 110 and the second shell 120 are in the unfolded state, the arrangement direction Y, the thickness direction Z of the heating plate 310, and the width direction X of the heating plate 310 are perpendicular to each other, and the width direction X of the heating plate 310 is parallel to the length direction of the rotating shaft mechanism 130. The extension direction of the slits is parallel to the arrangement direction Y, which can be absolutely parallel or approximately parallel, for example, with a deviation within 3°. The hollow portion 3141 can be a hole in addition to a slit, and the specific configuration can be determined according to actual conditions.

[0113] In some embodiments, as shown in Figures 10 and 11, a first adhesive layer 317 is provided between the first heat-conducting layer 314 and the second heat-conducting layer 315. This arrangement allows the first heat-conducting layer 314 and the second heat-conducting layer 315 to be firmly bonded together. The first adhesive layer 317 may be a glue layer.

[0114] In addition to being configured as a multi-layer structure, in some embodiments, the heating plate 310 can also be configured as a single-layer structure. For example, the heating plate 310 is a single-layer metal layer structure or a single-layer alloy layer structure.

[0115] The connection method between the heating plate 310 and the foldable shell 100 is not unique. In some embodiments, as shown in Figures 6b, 7, and 8, the first heating plate area 311 is fixedly connected to the first shell 110, and the second heating plate area 312 is freely disposed between the second screen area 202 and the second shell 120. By freely disposing the second heating plate area 312 between the second screen area 202 and the second shell 120, when the first shell 110 and the second shell 120 are unfolded and folded, the second heating plate area 312 can move relative to the second shell 120, thereby preventing the foldable shell 100 from pulling and damaging the heating plate 310 during the unfolding and folding process.

[0116] The second heating plate area 312 being freely disposed between the second screen area 202 and the second shell 120 specifically means that the freedom of the second heating plate area 312 is not constrained in a direction perpendicular to the thickness of the second heating plate area 312 .

[0117] The first heating plate 311 can be fixed to the first housing 110 by bonding. Specifically, as shown in Figures 8, 9, and 10, a second bonding layer 318 is provided between the first heating plate 311 and the first housing 110. The second bonding layer 318 can be a glue layer. In addition to bonding, the first heating plate 311 can also be fixed to the first housing 110 by fasteners (such as screws).

[0118] In addition to the above-mentioned connection method between the heating plate 310 and the foldable shell 100, the first heating plate area 311 can be freely set between the first screen area 201 and the first shell 110, the second heating plate area 312 can be freely set between the second screen area 202 and the second shell 120, and the third heating plate area 313 can be fixedly connected to the support surface of the rotating shaft mechanism 130, such as by bonding.

[0119] In some embodiments, as shown in Figures 2, 6b, and 8, a power supply unit (e.g., indicated by reference numeral 500 in Figure 8) is disposed within the first accommodation space 115. The power supply unit is electrically connected to the first heating plate 311 via the flexible printed circuit board 316. Since the first heating plate 311 is fixedly connected to the first housing 110, disposing the power supply unit within the first accommodation space 115 ensures a fixed relative position between the power supply unit and the first heating plate 311, preventing relative movement of the flexible printed circuit board 316 relative to the power supply unit, thereby ensuring stable transmission of electrical signals within the flexible printed circuit board 316.

[0120] In some embodiments, as shown in Figures 6b, 7 and 8, the power supply unit is a first circuit board 500 arranged in the first accommodating space 115, the first end of the flexible circuit board 316 is welded to the first heating plate area 311, the second end of the flexible circuit board 316 extends into the first accommodating space 115 and is fixed to the bottom wall 112 of the first middle frame, and the power supply unit is electrically connected to the second end of the flexible circuit board 316 through a conductive spring 520.

[0121] Of course, the power supply unit is not limited to the first circuit board 500 . In other embodiments, the power supply unit may also be a battery.

[0122] Figures 12 to 15 show an embodiment in which the heating unit 300 is arranged between film layers in the first display screen 200, wherein Figure 12 is a front schematic diagram of the foldable electronic device (mobile phone) in the second embodiment of the present application, Figure 13 is a CC cross-sectional view of the foldable electronic device in Figure 12, Figure 14 is a schematic diagram of the layout of the heating lines in the heating unit 300 in some embodiments of the present application, and Figure 15 is a schematic diagram of the layout of the heating lines in the heating unit 300 in other embodiments of the present application.

[0123] As shown in Figures 12 and 13, in this embodiment, along the thickness direction Z of the first display screen 200, the first display screen 200 includes a support layer 210, a flexible panel 220 disposed on the support layer 210, and a touch layer 230 disposed on the flexible panel 220. The heating unit 300 is disposed between the touch layer 230 and the support layer 210. By disposing the heating unit 300 between the touch layer 230 and the support layer 210, that is, integrating the heating unit 300 with the first display screen 200, the structure between the foldable housing 100 and the first display screen 200 is made more compact, which helps reduce the number of components of the foldable electronic device and thus facilitates the assembly of the foldable electronic device.

[0124] As shown in FIG13 , the flexible panel 220 may be an OLED (Organic Light-Emitting Diode) display panel; however, the flexible panel 220 is not limited thereto and may be another type of display panel, such as an E-ink (Electronic Ink) display panel. The support layer 210 primarily supports the flexible panel 220 to increase its strength and stability. The support layer 210 may be made of polyimide (PI) or polycarbonate (PC), which have excellent mechanical properties and high-temperature resistance, and can effectively protect the flexible panel 220 and maintain its shape stability.

[0125] In some embodiments, as shown in FIG13 , along the thickness direction Z of the first display screen 200, the first display screen 200 further includes a polarizer 240 disposed on the touch layer 230, and a protective layer 250 disposed on the polarizer 240. In the first display screen 200, an adhesive layer 260 is disposed between adjacent two of the support layer 210, the heating unit 300, the flexible panel 220, the touch layer 230, the polarizer 240, and the protective layer 250.

[0126] The polarizer 240 mainly prevents reflection of light from outside the first display screen 200, thereby enhancing the visibility of the first display screen 200. The protective layer 250 mainly protects the inner film layer to prevent damage to the inner film layer.

[0127] In some embodiments, as shown in Figures 12 and 13, the heating unit 300 includes a heating trace layer 320, which is disposed between the support layer 210 and the flexible panel 220, and the heating trace layer 320 is at least partially located in the bending region 203. By configuring the heating unit 300 as the heating trace layer 320, the structure of the heating unit 300 can be simplified and less space is occupied. By disposing the heating trace layer 320 between the support layer 210 and the flexible panel 220, that is, disposing the heating trace layer 320 on the back side of the flexible panel 220, this helps reduce the impact of the heating trace layer 320 on the light output of the flexible panel 220, thereby ensuring the display effect of the flexible panel 220.

[0128] In some embodiments, as shown in Figures 13 and 14 , the heating trace layer 320 includes a carrier layer 321 and heating traces 322 disposed on the carrier layer 321. The heating traces 322 are serpentine. The serpentine shape of the heating traces 322 increases the heating area of ​​the heating traces 322, thereby improving the heating effect of the heating traces 322 on the bending region 203.

[0129] The heating traces 322 are electrically connected to the drive unit 700, which is in turn electrically connected to the control unit 400. The drive unit 700 includes a heating control circuit, which is connected to the heating traces 322 to drive the heating traces 322 to heat the bending region 203. The drive unit 700 may be a display driver chip for the first display screen 200.

[0130] The shape of the serpentine line is not unique. In some embodiments, as shown in FIG13 , the serpentine line may be a line that meanders along the width direction Y of the bending region 203. In other embodiments, as shown in FIG14 , the serpentine line may be a line that meanders along the length direction X of the bending region 203.

[0131] In some embodiments, as shown in FIG13 , the heating traces 322 are ITO (Indium tin oxide) traces. By configuring the heating traces 322 as ITO traces, on the one hand, ITO traces can be formed through an etching process, making them easy to manufacture and advantageous in large-scale production; on the other hand, ITO traces are transparent, minimizing the impact on the display quality of the first display screen 200.

[0132] 13 , the heating trace layer 320 may further include a trace insulation layer 323 covering the heating traces 322. The trace insulation layer 323 may isolate the heating traces 322 from other layers in the first display 200, thereby preventing short circuits.

[0133] In some embodiments, the heating unit 300 may further include multiple heating trace layers 320 , which are stacked. The multiple heating trace layers 320 can increase the power of the heating unit 300 , thereby improving the heating effect of the heating unit 300 on the bending zone 203 .

[0134] The number of the heating wiring layers 320 may be two, or three or more, which is not specifically limited here.

[0135] Figures 16 and 17 show another embodiment in which the heating unit 300 is arranged between the film layers in the first display screen 200, wherein Figure 16 is a structural schematic diagram of the first display screen 200 of the foldable electronic device (mobile phone) in the third embodiment of the present application, and Figure 17 is a schematic diagram of the working state adjustment of the heating unit 300 shown in Figure 16.

[0136] As shown in FIG16 , along the thickness direction Z of the first display screen 200 , the first display screen 200 includes a supporting layer 210, a flexible panel 220 disposed on the supporting layer 210, and a touch layer 230 disposed on the flexible panel 220. The heating unit 300 is at least composed of the flexible panel 220. The control unit 400 is used to: when the first temperature value is less than the temperature threshold, as shown in FIG17 (a), control the brightness of the flexible panel 220 to increase to the first brightness value.

[0137] By setting the flexible panel 220 as a heating unit 300 and increasing the brightness of the flexible panel 220 to generate more heat to heat the bending area 203, there is no need to add an additional heating unit 300, which reduces the number of components of the foldable electronic device and helps reduce the cost of the foldable electronic device.

[0138] In some embodiments, as shown in FIG17( a ), the first brightness value may be the maximum brightness value of the flexible panel 220 . This configuration allows the flexible panel 220 to generate more heat, thereby improving the heating effect on the bending area 203 .

[0139] Of course, it is not limited thereto, and the first brightness value may also be 90%, 80%, etc. of the maximum brightness value of the flexible panel 220 , and may be set specifically according to actual conditions.

[0140] In some embodiments, the control unit 400 is configured to: when the first temperature value is greater than or equal to the temperature threshold, control the brightness of the flexible panel 220 to decrease to a second brightness value as shown in FIG17( b ); wherein the second brightness value is less than the first brightness value.

[0141] When the first temperature value is greater than or equal to the temperature threshold, the control unit 400 reduces the brightness of the flexible panel 220 to a second brightness value. This can prevent the flexible panel 220 from being in a high-brightness state for a long time and consuming too much power, thereby helping to save power of the foldable electronic device and improve the battery life of the foldable electronic device.

[0142] As shown in (b) of Figure 17, the second brightness value can be 50% of the maximum brightness value of the flexible panel 220, but is not limited to this. The second brightness value can also be 30%, 40%, 60%, etc. of the maximum brightness value of the flexible panel 220, which can be determined according to the intensity value of the ambient light around the first display screen 200.

[0143] In some embodiments, as shown in FIG16 , along the thickness direction Z of the first display screen 200, the first display screen 200 further includes a polarizer 240 disposed on the touch layer 230, and a protective layer 250 disposed on the polarizer 240. In the first display screen 200, an adhesive layer 260 is disposed between adjacent portions of the support layer 210, the flexible panel 220, the touch layer 230, the polarizer 240, and the protective layer 250.

[0144] Figure 18 is a schematic diagram of a foldable electronic device issuing a prompt message in some embodiments of the present application. In some embodiments, the control unit 400 is configured to control the foldable electronic device to issue a first prompt message when the first temperature value is less than a temperature threshold, as shown in Figure 18(a). By controlling the foldable electronic device to issue the first prompt message when the first temperature value is less than the temperature threshold, a low temperature warning can be provided to the user in a timely manner, reducing the user's folding or unfolding operations of the foldable electronic device in low temperature environments, thereby further reducing damage to the first display screen 200.

[0145] In some embodiments, the control unit 400 is configured to control the foldable electronic device to issue a second prompt message when the first temperature value is greater than or equal to a temperature threshold, as shown in FIG18(b). By controlling the foldable electronic device to issue the second prompt message when the first temperature value is greater than or equal to the temperature threshold, the user can be promptly alerted and the prompt can be dismissed, thereby reducing the impact on the user's use of the foldable electronic device.

[0146] In some embodiments, as shown in FIG18 , the control unit 400 is configured to control the first display screen 200 to issue a first prompt message and a second prompt message. The first prompt message and the second prompt message issued by the first display screen 200 are easily recognizable by the user and are not easily confused with other prompt messages of the foldable electronic device.

[0147] In some embodiments, the first prompt includes a first interface text message prompting users not to fold or unfold the device. For example, as shown in Figure 18(a), the first interface text message may read "The temperature is too low. Do not fold or unfold!" By setting the first prompt as the first interface text message, the user's recognition of the first prompt can be further improved, preventing confusion with other prompts on the foldable electronic device.

[0148] In some embodiments, the first prompt information includes: first interface color information for prompting not to fold or unfold operations. For example, the first interface color information may be a blue display interface of the first display screen 200. By setting the first prompt information as the first interface color information, the recognition of the first prompt information can be further improved, thereby preventing users from being confused with other prompt information of the foldable electronic device.

[0149] The first prompt information may be only the first interface text information, or only the first interface color information, or may include both the first interface text information and the first interface color information.

[0150] In some embodiments, the second prompt includes a second interface text message indicating that the folding and unfolding operations are possible. For example, as shown in FIG18(b), the second interface text message may be "Low temperature warning lifted, folding and unfolding operations are possible!" By setting the second prompt as a second interface text message, the recognition of the second prompt can be further improved, preventing users from confusing it with other prompts on the foldable electronic device.

[0151] In some embodiments, the second prompt information includes: second interface color information for indicating that the folding and unfolding operations are possible. For example, the second interface color information may be red on the display interface of the first display screen 200. By setting the second prompt information as the second interface color information, the recognition of the second prompt information can be further improved, thereby preventing users from being confused with other prompt information of the foldable electronic device.

[0152] The second prompt information may be only the second interface text information, or only the second interface color information, or may include both the second interface text information and the second interface color information.

[0153] Of course, in addition to the above-mentioned interface color information and interface text information, the first prompt information and the second prompt information can also be sound information, and the control unit 400 is used to control the speaker of the foldable electronic device to emit the first prompt information and the second prompt information; the first prompt information and the second prompt information can also be vibration information, and the control unit 400 is used to control the vibration motor of the foldable electronic device to emit the first prompt information and the second prompt information.

[0154] FIG20 is a schematic diagram of the structure of the foldable electronic device in the fourth embodiment of the present application in an unfolded state, and FIG21 is a schematic diagram of the structure of the foldable electronic device shown in FIG20 in a folded state. The main difference between the foldable electronic device shown in FIG20 and FIG21 and the foldable electronic device shown in FIG3 and FIG4 is that the first housing 110 of the foldable electronic device shown in FIG20 and FIG21 has the first rear cover 114 removed, and a second display screen 800 is added to the first housing 110, as described below:

[0155] As shown in Figures 20 and 21, the foldable electronic device also includes a second display screen 800, the first shell 110 includes a first middle frame 111 and a first back cover 114, the first screen area 201 is arranged on one side of the first middle frame 111, and the second display screen 800 is arranged on the other side of the first middle frame 111. The second display screen 800 and the first middle frame 111 form a first accommodating space 115, and a support wall 117 is provided in the first accommodating space 115, and the support wall 117 is used to support the second display screen 800.

[0156] The second shell 120 includes a second middle frame 121 and a second back cover 124 . The second screen area 202 is arranged on one side of the second middle frame 121 , and the second back cover 124 is arranged on the other side of the second middle frame 121 . The second back cover 124 and the second middle frame 121 form a second accommodating space 125 .

[0157] The second display screen 800 may be a flexible screen (such as an OLED display screen) or a hard screen (such as a liquid crystal display screen), which is not specifically limited here.

[0158] When the user needs to use a display screen with a larger display area, such as when watching a movie, as shown in Figure 20, the foldable shell 100 can be switched to the unfolded state. At this time, the first display screen 200 (that is, the inner screen) is in the unfolded state. Since the display area of ​​the first display screen 200 is larger, the user can get a better visual experience. When the user takes the foldable electronic device out, as shown in Figure 21, the foldable shell 100 can be switched to the folded state. At this time, the foldable electronic device occupies a smaller space, making it easier to carry. At the same time, the user can operate the foldable electronic device through the second display screen 800 (that is, the outer screen), which can ensure the normal use of the foldable electronic device.

[0159] In some embodiments, as shown in Figures 20 and 21, the control unit 400 is configured to: when the first housing 110 and the second housing 120 are in the unfolded state, as shown in Figure 20, control the first display screen 200 to issue the first prompt message and the second prompt message; and when the first housing 110 and the second housing 120 are in the folded state, control the second display screen 800 to issue the first prompt message and the second prompt message, as shown in Figure 21. This configuration ensures that the user receives the first prompt message and the second prompt message in a timely manner regardless of whether the foldable electronic device is in the unfolded state or the folded state, preventing the user from performing unfolding or folding operations when the first temperature value of the bending zone 203 is below the temperature threshold, thereby facilitating the improvement of the service life of the first display screen 200.

[0160] As for the types of the first prompt information and the second prompt information, please refer to the above description for details and will not be repeated here.

[0161] FIG19 is a flow chart of a control method for a foldable electronic device in some embodiments of the present application. As shown in FIG3 , FIG4 and FIG19 , an embodiment of the present application further provides a control method for a foldable electronic device, including: S1, obtaining a first temperature value of the bending zone 203;

[0162] Among them, the first temperature value of the bending zone 203 can be obtained directly; it can also be obtained indirectly, for example, the temperature value in the first accommodating space 115 of the first shell 110 can be obtained, and then the first temperature value can be indirectly obtained based on the relationship between the temperature value in the first accommodating space 115 and the first temperature value of the bending zone 203.

[0163] S2. When the first temperature value is less than the temperature threshold, control the heating unit 300 to heat at least the bending zone 203; wherein, the heating unit 300 can heat only the bending zone 203, or can heat the first screen area 201, the second screen area 202 and the bending zone 203 of the entire first display screen 200, which is not specifically limited here.

[0164] With such a configuration, when the foldable electronic device is in a low-temperature environment, if the first temperature value of the bending zone 203 is less than the temperature threshold, the heating unit 300 can be controlled to heat the bending zone 203 of the first display screen 200, thereby increasing the temperature of the bending zone 203 to improve the bending performance of the bending zone 203 of the first display screen 200, thereby reducing damage to the first display screen 200 when the user performs folding and unfolding operations.

[0165] In some embodiments, after step S2, the method further includes: S3, when the first temperature value is greater than or equal to the temperature threshold, controlling the heating unit 300 to stop heating the bending zone 203. Controlling the heating unit 300 to stop heating the bending zone 203 may include controlling the heating unit 300 to stop working, or controlling the heating unit 300 to enter a low-power state. When the heating unit 300 is in the low-power state, the heat generated by the heating unit 300 is less than or equal to the heat dissipated by the first display screen 200, that is, the heat generated by the heating unit 300 in the low-power state is insufficient to increase the temperature of the bending zone 203.

[0166] In some embodiments, as shown in Figures 16, 17 and 19, along the thickness direction Z of the first display screen 200, the first display screen 200 includes a flexible panel 220 and a touch layer 230 disposed on the flexible panel 220; the heating unit 300 is at least composed of the flexible panel 220.

[0167] Controlling the heating unit 300 to heat at least the bending area 203 includes: controlling the brightness of the flexible panel 220 to increase to a first brightness value.

[0168] With this arrangement, there is no need to add an additional heating unit 300, which reduces the number of components of the foldable electronic device and helps reduce the cost of the foldable electronic device.

[0169] In some embodiments, the first brightness value may be the maximum brightness value of the flexible panel 220 . This configuration allows the flexible panel 220 to generate more heat, thereby improving the heating effect on the bending area 203 .

[0170] In some embodiments, when the first temperature value is greater than or equal to the temperature threshold, the brightness of the flexible panel 220 is controlled to decrease to a second brightness value. In other words, controlling the heating unit 300 to stop heating the bending zone 203 includes controlling the brightness of the flexible panel 220 to decrease to the second brightness value. The second brightness value is lower than the first brightness value. This configuration can prevent the flexible panel 220 from consuming excessive power when in a high-brightness state for extended periods of time, thereby conserving power in the foldable electronic device.

[0171] In some embodiments, when the first temperature value is less than a temperature threshold, the foldable electronic device is controlled to issue a first prompt message; when the first temperature value is greater than or equal to the temperature threshold, the foldable electronic device is controlled to issue a second prompt message.

[0172] By controlling the foldable electronic device to issue a first prompt message, a low temperature warning can be promptly issued to the user, thereby reducing the user's folding or unfolding operations of the foldable electronic device in a low temperature environment; by controlling the foldable electronic device to issue a second prompt message, the warning can be canceled to the user in a timely manner, thereby reducing the impact on the user's use of the foldable electronic device.

[0173] In some embodiments, as shown in FIG19 , in S2, when the first temperature value is less than the temperature threshold, the heating unit 300 is controlled to heat at least the bending region 203, and the first display screen 200 is controlled to issue a first prompt message. The first prompt message includes at least one of first interface text information and first interface color information. This configuration can improve the recognition of the first prompt message and prevent the user from being confused with other prompt messages on the foldable electronic device.

[0174] As shown in Figure 19, S2 includes: S21, judging whether the first temperature value is less than the temperature threshold; if the first temperature value is less than the temperature threshold, executing S22 and S23; wherein, S22, controlling the heating unit 300 to heat at least the bending zone 203; S23, controlling the first display screen 200 to issue a first prompt message.

[0175] In some embodiments, as shown in FIG19 , in S3, when the first temperature value is greater than or equal to the temperature threshold, the heating unit 300 is controlled to stop heating the bending region 203 and the first display screen 200 is controlled to issue a second prompt message; wherein the second prompt message includes at least one of second interface text information and second interface color information. This configuration can improve the recognition of the second prompt message and prevent the user from being confused with other prompt messages of the foldable electronic device.

[0176] As shown in Figure 19, S3 includes: S31, determining whether the first temperature value is greater than or equal to the temperature threshold; if so, executing S32 and S33; wherein, S32, controlling the heating unit 300 to stop heating the bending zone 203; S33, controlling the first display screen 200 to issue a second prompt message.

[0177] FIG22 is a flow chart of a control method for a foldable electronic device in some other embodiments of the present application. As shown in FIG20 , FIG21 and FIG22 , an embodiment of the present application further provides a control method for a foldable electronic device, including:

[0178] N1: Obtaining a first temperature value of the bending zone 203;

[0179] N2: When the first shell 110 and the second shell 120 are in the unfolded state and the first temperature value is less than the temperature threshold, the heating unit 300 is controlled to heat at least the bending area 203, and the first display screen 200 is controlled to issue a first prompt message;

[0180] Specifically, N2 includes: N21, determining whether the first shell 110 and the second shell 120 are in the expanded state; if the first shell 110 and the second shell 120 are in the expanded state, executing N22, determining whether the first temperature value is less than the temperature threshold; if the first temperature value is less than the temperature threshold, executing N23 and N24, wherein N23, controls the heating unit 300 to heat at least the bending zone 203; N24, controls the first display screen 200 to issue a first prompt message.

[0181] N3. When the heating unit 300 heats the bending zone 203 and the first temperature value is greater than or equal to the temperature threshold, the heating unit 300 is controlled to stop heating the bending zone 203 and the first display screen 200 is controlled to issue a second prompt message.

[0182] Specifically, N3 includes: N31, determining whether the first temperature value is greater than or equal to the temperature threshold; if the first temperature value is greater than or equal to the temperature threshold, executing N32 and N33; wherein, N32, controlling the heating unit 300 to stop heating the bending zone 203; N33, controlling the first display screen 200 to issue a second prompt message.

[0183] In some embodiments, as shown in FIG22 , a method for controlling a foldable electronic device includes:

[0184] N4: When the first housing 110 and the second housing 120 are in the folded state and the first temperature value is less than the temperature threshold, control the heating unit 300 to heat at least the bending area 203 and control the second display screen 800 to issue a first prompt message;

[0185] Specifically, N4 includes: N41, determining whether the first shell 110 and the second shell 120 are in a folded state; if the first shell 110 and the second shell 120 are in a folded state, executing N42, determining whether the first temperature value is less than the temperature threshold; if the first temperature value is less than the temperature threshold, executing N43 and N44, wherein N43, controlling the heating unit 300 to heat at least the bending zone 203; N44, controlling the second display screen 800 to issue a first prompt message.

[0186] N5. When the heating unit 300 heats the bending zone 203 and the first temperature value is greater than or equal to the temperature threshold, the heating unit 300 is controlled to stop heating the bending zone 203, and the second display screen 800 is controlled to issue a second prompt message.

[0187] Specifically, N5 includes: N51, determining whether the first temperature value is greater than or equal to the temperature threshold; if the first temperature value is greater than or equal to the temperature threshold, executing N52 and N53; wherein, N52, controlling the heating unit 300 to stop heating the bending zone 203; N53, controlling the second display screen 800 to issue a second prompt message.

[0188] An embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a control unit, the control method of the foldable electronic device described in the above method embodiment is implemented.

[0189] An embodiment of the present application also provides a computer program product. When the computer program product is run on a foldable electronic device, the foldable electronic device implements the control method described in the above method embodiment when executing.

[0190] The present application also provides a chip system, including a control unit, the control unit including a processor and a memory, wherein the processor executes a computer program stored in the memory to implement the control method described in the above method embodiment. The chip system can be a single chip or a chip module composed of multiple chips.

[0191] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted via the computer-readable storage medium. The computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, hard disk or tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)).

[0192] Those skilled in the art will appreciate that all or part of the process steps in the above-described method embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program can include the process steps in the above-described method embodiments. The aforementioned storage medium can include various media capable of storing program code, such as ROM or random access memory (RAM), magnetic disks, or optical disks.

[0193] The naming or numbering of steps in this application does not mean that the steps in the method flow must be executed in the time / logical sequence indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0194] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0195] In the embodiments provided in this application, it should be understood that the disclosed devices / equipment and methods can be implemented in other ways. For example, the device / equipment embodiments described above are merely schematic. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0196] The types of hatching in the drawings of this application are for the purpose of distinguishing different components and should not be understood as limiting the materials of the components. The drawings of this application are for the purpose of illustrating the structural composition and are not shown to scale with the actual product.

[0197] Although the description of this application will be introduced in conjunction with some embodiments, this does not mean that the features of this application are limited to these embodiments. On the contrary, the purpose of introducing the application in conjunction with the embodiments is to cover other options or modifications that may be extended based on the claims of this application. In order to provide a deep understanding of this application, the above description will contain many specific details. This application can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of this application, some specific details will be omitted in the description. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other unless there is a conflict.

[0198] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first," "second," or "third" may explicitly or implicitly include one or more of the features.

[0199] In the embodiments of this application, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0200] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The directional terms mentioned in the embodiments of the present application, such as "up", "down", "left", "right", "inside", "outside", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. "Multiple" means at least two.

[0201] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0202] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A foldable electronic device, characterized in that: It includes a foldable housing, a first display screen, a heating unit and a control unit; The foldable housing includes a first housing, a second housing, and a rotating shaft mechanism provided at a position where the first housing and the second housing meet, and the first housing and the second housing can be switched between an unfolded state and a folded state; The first display screen has a first screen area, a second screen area, and a bending area, the first screen area is arranged on the first shell, the second screen area is arranged on the second shell, and the bending area is arranged on the rotating shaft mechanism; The heating unit is at least used to heat the bending zone of the first display screen, and the control unit is used to: obtain a first temperature value of the bending zone; when the first temperature value is less than a temperature threshold, control the heating unit to heat at least the bending zone.

2. The foldable electronic device according to claim 1, wherein: Along the thickness direction of the first display screen, the first display screen includes a support layer, a flexible panel disposed on the support layer, and a touch layer disposed on the flexible panel, and the heating unit is disposed between the touch layer and the support layer.

3. The foldable electronic device according to claim 2, wherein: The heating unit is at least composed of the flexible panel; and the control unit is configured to control the brightness of the flexible panel to increase to a first brightness value when the first temperature value is less than the temperature threshold.

4. The foldable electronic device according to claim 3, wherein: The first brightness value is the maximum brightness value of the flexible panel.

5. The foldable electronic device according to claim 3 or 4, characterized in that: The control unit is configured to: when the first temperature value is greater than or equal to the temperature threshold, control the brightness of the flexible panel to decrease to a second brightness value; wherein the second brightness value is less than the first brightness value.

6. The foldable electronic device according to claim 2, wherein: The heating unit includes a heating wiring layer, which is arranged between the supporting layer and the flexible panel, and at least a portion of the heating wiring layer is located in the bending area.

7. The foldable electronic device according to claim 6, wherein: The heating wiring layer includes a bearing layer and a heating wiring arranged on the bearing layer. The heating wiring is a serpentine line, and / or the heating wiring is an ITO wiring.

8. The foldable electronic device according to claim 1, wherein: The heating unit includes a bendable heating plate, which is arranged between the first display screen and the foldable shell; the heating plate has a first heating plate area, a second heating plate area and a third heating plate area, the first heating plate area is arranged on the first shell, the second heating plate area is arranged on the second shell, and the third heating plate area is arranged on the rotating shaft mechanism.

9. The foldable electronic device according to claim 8, wherein: Along the thickness direction of the heating plate, the heating plate includes a first heat-conducting layer and a second heat-conducting layer that are stacked. The first heat-conducting layer is a metal layer or an alloy layer, and the second heat-conducting layer is a graphite layer.

10. The foldable electronic device according to claim 9, wherein: The first heat-conducting layer is arranged on a side of the second heat-conducting layer close to the first display screen.

11. The foldable electronic device according to claim 9 or 10, characterized in that: The thickness of the first heat conducting layer is smaller than that of the second heat conducting layer.

12. The foldable electronic device according to any one of claims 9 to 11, characterized in that: A hollow portion is provided on the first heat-conducting layer. The hollow portion is at least partially located in the third heating plate area and passes through the first heat-conducting layer.

13. The foldable electronic device according to claim 12, wherein: The hollow portion is a slit, and the slit extends along the arrangement direction of the first heating plate area, the second heating plate area, and the third heating plate area.

14. The foldable electronic device according to any one of claims 8 to 13, characterized in that: The first heating plate area is fixedly connected to the first shell, and the second heating plate area is freely arranged between the second screen area and the second shell.

15. The foldable electronic device according to claim 14, wherein: The first shell includes a first middle frame and a first back cover, the first screen area is arranged on one side of the first middle frame, the first back cover is arranged on the other side of the first middle frame, the first heating area is arranged between the first screen area and the first middle frame, the first back cover and the first middle frame form a first accommodating space, and a power supply unit is provided in the first accommodating space, and the power supply unit is electrically connected to the first heating area through a flexible circuit board.

16. The foldable electronic device according to any one of claims 1 to 15, characterized in that: The control unit is used to: control the foldable electronic device to issue a first prompt message when the first temperature value is less than the temperature threshold; and control the foldable electronic device to issue a second prompt message when the first temperature value is greater than or equal to the temperature threshold.

17. The foldable electronic device according to claim 16, wherein: The control unit is used to control the first display screen to send the first prompt information and the second prompt information.

18. The foldable electronic device according to claim 16, wherein: The foldable electronic device further includes a second display screen; the first housing includes a first middle frame, the first screen area is arranged on one side of the first middle frame, and the second display screen is arranged on the other side of the first middle frame; the second housing includes a second middle frame and a second back cover, the second screen area is arranged on one side of the second middle frame, and the second back cover is arranged on the other side of the second middle frame; The control unit is used to: when the first shell and the second shell are in the unfolded state, control the first display screen to issue the first prompt information and the second prompt information; when the first shell and the second shell are in the folded state, control the second display screen to issue the first prompt information and the second prompt information.

19. The foldable electronic device according to claim 17 or 18, characterized in that: The first prompt information includes: a first interface text message for prompting not to fold or unfold operations, and / or a first interface color information for prompting not to fold or unfold operations; The second prompt information includes: second interface text information for prompting that the folding and unfolding operations can be performed, and / or second interface color information for prompting that the folding and unfolding operations can be performed.

20. The foldable electronic device according to any one of claims 1 to 19, wherein: A first circuit board is provided in the first shell, and the first circuit board includes a carrier substrate. The control unit is located on the carrier substrate; a plurality of temperature sensors are also provided on the carrier substrate, and the control unit is used to obtain the first temperature value based on the temperature values ​​detected by the plurality of temperature sensors.

21. A control method for a foldable electronic device, characterized in that: The foldable electronic device includes a foldable housing, a first display screen, and a heating unit; the foldable housing includes a first housing, a second housing, and a hinge mechanism provided at a position where the first housing and the second housing meet, and the first housing and the second housing are switchable between an unfolded state and a folded state; The first display screen has a first screen area, a second screen area, and a bending area, the first screen area is arranged on the first shell, the second screen area is arranged on the second shell, and the bending area is arranged on the rotating shaft mechanism; the heating unit is used to heat at least the bending area of ​​the first display screen; The control method of the foldable electronic device includes: obtaining a first temperature value of the bending zone, and controlling the heating unit to heat at least the bending zone when the first temperature value is less than a temperature threshold.

22. The control method of a foldable electronic device according to claim 21, wherein: Along the thickness direction of the first display screen, the first display screen includes a flexible panel and a touch layer provided on the flexible panel; the heating unit is at least composed of the flexible panel; Controlling the heating unit to heat at least the bending zone includes: controlling the brightness of the flexible panel to increase to a first brightness value.

23. The control method of a foldable electronic device according to claim 22, wherein: The first brightness value is the maximum brightness value of the flexible panel.

24. The control method of a foldable electronic device according to claim 22 or 23, characterized in that: When the first temperature value is greater than or equal to a temperature threshold, the brightness of the flexible panel is controlled to decrease to a second brightness value; wherein the second brightness value is less than the first brightness value.

25. The control method of a foldable electronic device according to any one of claims 21 to 24, characterized in that: When the first temperature value is less than the temperature threshold, controlling the foldable electronic device to issue a first prompt message; When the first temperature value is greater than or equal to the temperature threshold, the foldable electronic device is controlled to issue a second prompt message.

26. The control method of a foldable electronic device according to claim 25, characterized in that: When the first temperature value is less than the temperature threshold, the first display screen is controlled to issue the first prompt message; when the first temperature value is greater than or equal to the temperature threshold, the first display screen is controlled to issue the second prompt message.

27. The control method of a foldable electronic device according to claim 25, wherein: The foldable electronic device further includes a second display screen; the first housing includes a first middle frame, the first screen area is arranged on one side of the first middle frame, and the second display screen is arranged on the other side of the first middle frame; the second housing includes a second middle frame and a second back cover, the second screen area is arranged on one side of the second middle frame, and the second back cover is arranged on the other side of the second middle frame; When the first shell and the second shell are in the unfolded state, controlling the first display screen to issue the first prompt information and the second prompt information; When the first shell and the second shell are in the folded state, the second display screen is controlled to issue the first prompt information and the second prompt information.

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